Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures

Andrea Falqui*, Giovanni Bertoni, Alessandro Genovese, Sergio Marras, Mario Malerba, Isabella R. Franchini, Liberato Manna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

PbTe nanocrystals were synthesized and then reacted with a toluene solution containing AuCl3. Depending on the reaction conditions and on the starting PbTe nanocrystals morphology, different kinds of nanostructures have been obtained: single defect-free PbTe nanocrystals with and without an external amourphous oxide shell, crystalline-Au core/amorphous PbxTeyAuz shell structure, large balloon-shaped (or mushroom-shaped) Au domain attached via its apex to the surface of the nanocrystals. Structure and composition of these different types of nanostructure have been studied by means of Cs-corrected High Resolution Transmission Electron Microscopy (HRTEM) and Scanning Transmission Electron Microscopy (STEM) together with Energy Dispersive X-Ray Spectrometry (EDX), respectively. These nanostructures have been found sensitive to the high-intensity electron beam and its effect has been investigated. Microsc. Res. Tech. 73:944-951, 2010.

Original languageEnglish (US)
Pages (from-to)944-951
Number of pages8
JournalMicroscopy Research and Technique
Volume73
Issue number10
DOIs
StatePublished - Oct 2010
Externally publishedYes

Keywords

  • Cs-corrected high resolution transmission electron microscopy
  • Energy-dispersive x-ray spectrometry
  • PbTe
  • Quantum dots
  • Scanning transmission electron microscopy

ASJC Scopus subject areas

  • Anatomy
  • Histology
  • Instrumentation
  • Medical Laboratory Technology

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